feat(douyu): 和平小店扭蛋碎片查询 + 深色模式修复 + 任务状态 WS 即时推送

- 碎片: 新增 query_xpd_fragments 任务, 复用 e语言 gamecoin 接口取扭蛋币 jb2,
  账号已存角色回退(规避 Livelink 风控), accounts.xpd_fragments 字段与迁移
- 列表: 和平小店移除鱼翅/限制兑换/换绑时间列, 新增扭蛋碎片列;
  操作区硬编码白底改用 theme token, 深色模式适配(三个手册共用)
- 轮询: 任务状态经 WS(level=task)即时推送(二维码/绑定进度即时展示),
  pending/running/终态全覆盖, REST/WS 载荷统一 douyu_task_payload,
  raw 快照递归剥离, HTTP 轮询降频 5s/30s 兜底

web/backend/routers/douyu.py

@@ -32,6 +32,7 @@ from ..services.douyu_service import (
     cookie_account_ids_query,
     create_douyu_planned_tasks,
     douyu_config_value,
+    douyu_task_payload,
     ensure_douyu_config,
 )
 
@@ -120,104 +121,15 @@ def _account_out(account: Account) -> DouyuTaskAccountOut:
         xpd_plat_id=account.xpd_plat_id,
         xpd_area_id=account.xpd_area_id,
         xpd_balance=account.xpd_balance,
+        xpd_fragments=account.xpd_fragments,
         xpd_bind_status=account.xpd_bind_status or "",
         assigned_to=account.assigned_to,
         assigned_username=account.assigned_user.username if account.assigned_user else None,
     )
 
 
-def _slim_goods(goods: object) -> object:
-    """保留兑换图片和列表展示需要的商品小字段。"""
-    if not isinstance(goods, dict):
-        return None
-    return {
-        key: value
-        for key, value in goods.items()
-        if key in {"commodityId", "commodity_id", "commodityName", "name", "webPic", "pic", "score", "status"}
-    }
-
-
-def _slim_limited_goods(goods: object) -> list[dict[str, object]]:
-    """限兑列表只返回前几个商品名，避免任务列表携带完整原始数组。"""
-    if not isinstance(goods, list):
-        return []
-    result: list[dict[str, object]] = []
-    for item in goods[:5]:
-        if not isinstance(item, dict):
-            continue
-        result.append({
-            key: value
-            for key, value in item.items()
-            if key in {"commodityId", "commodity_id", "commodityName", "name"}
-        })
-    return result
-
-
-def _sanitize_task_result(result: dict | None, task_type: str, *, include_detail: bool = False) -> dict | None:
-    """列表接口剥离原始快照/大数组；详情接口保留完整 result。"""
-    if not isinstance(result, dict):
-        return result
-    if include_detail:
-        return result
-
-    data = dict(result)
-    for key in (
-        "raw",
-        "bind_info",
-        "before_bind_info",
-        "bind_candidates",
-        "cooldown_bind_info",
-        "after_bind_info",
-        "activity_bind_snapshot",
-        "points_query",
-        "exchange_balance_query",
-        "query_act_aliases",
-        "records",
-    ):
-        data.pop(key, None)
-
-    # 和平小店任务 result 内嵌 role（含 gameOpenId 等），列表接口剥离其原始快照
-    role = data.get("role")
-    if isinstance(role, dict):
-        data["role"] = {key: value for key, value in role.items() if key != "raw"}
-
-    goods = data.get("goods")
-    if isinstance(goods, list):
-        data.pop("goods", None)
-    elif isinstance(goods, dict):
-        data["goods"] = _slim_goods(goods)
-
-    if "limited_goods" in data:
-        data["limited_goods"] = _slim_limited_goods(data.get("limited_goods"))
-
-    if task_type not in {"get_bind_qr", "prepare_esports_bind", "get_esports_bind_qr", "get_xpd_bind_qr"}:
-        data.pop("url", None)
-    if task_type not in {"create_elite_qr", "create_esports_qr", "create_gold_qr"}:
-        data.pop("pay_url", None)
-    return data
-
-
 def _task_out(task: DouyuTask, *, include_detail: bool = False) -> DouyuTaskOut:
-    account = task.account
-    return DouyuTaskOut(
-        id=task.id,
-        batch_id=task.batch_id,
-        account_id=task.account_id,
-        account_username=account.username if account else "",
-        account_uid=account.uid if account else "",
-        account_nickname=account.nickname if account else "",
-        task_type=task.task_type,
-        status=task.status or "",
-        message=task.message or "",
-        result=_sanitize_task_result(
-            task.result if isinstance(task.result, dict) else None,
-            task.task_type or "",
-            include_detail=include_detail,
-        ),
-        created_by=task.created_by,
-        created_at=task.created_at,
-        finished_at=task.finished_at,
-    )
+    return DouyuTaskOut(**douyu_task_payload(task, include_detail=include_detail))
 
 
 def _config_out(config: DouyuConfig) -> DouyuConfigOut: